Margaret Thatcher: 1925-2013

U.S. President Ronald Reagan and British Prime Minister Margaret Thatcher walk together behind the hotel where the North-South Summit is being held in Cancun, Mexico, Friday, October 23. (AP Photo)

AP2009

Former British Prime Minister Margaret Thatcher, gestures to members of the media as she stands on her house doorstep, following her return home from hospital, in central London, Monday June 29, 2009. Thatcher has returned home following a two-week stay in hospital after she fell and broke her left arm. The 82-year-old Thatcher, who suffers from dementia, waved to reporters with her right arm while the other arm remains in a sling. She did not make any comments before being escorted inside. (AP Photo/Lefteris Pitarakis)

AP2009

FILE - In this April 9, 1975 file photo, former California Governor Ronald Reagan presents a silver dollar medallion to Opposition Leader Margaret Thatcher when he visited her office at the House of Commons in London. Ex-spokesman Tim Bell says that Thatcher has died. She was 87. Bell said the woman known to friends and foes as "the Iron Lady" passed away Monday morning, April 8, 2013. (AP Photo/File)

Mrs. Margaret Thatcher, British politico in September 1974.(AP Photo)

AP2009

President Ronald Reagan and Secretary of State George Shultz look on as British Prime Minister Margaret Thatcher reads a statement outside the White House on Friday, July 18, 1987 after meeting with the President during a brief stop in Washington. Thatcher said that the world needs American leadership ?now more than ever.? (AP Photo/J. Scott Applewhite)

1987 AP

British Prime Minister Margaret Thatcher with husband arriving in England?s West Country in 1983. (AP Photo/Kemp)

AP2009

President Ronald Reagan escorts British Prime Minister Margaret Thatcher to the state floor of the White House for a state dinner, Thursday, February 26 in Washington. Mrs. Thatcher?s husband, Denis, and first lady Nancy Reagan are on the left. (AP Photo)

2009 AP

Former British Prime Minister, Margaret Thatcher, left, is accompanied by British Prime Minister Gordon Brown as she leaves 10 Downing Street, in London, after unveiling a portrait of herself in the Prime Minister's official residence, Monday, Nov. 23, 2009. (AP Photo/Sang Tan)

AP2009

Former British Prime Minister, Margaret Thatcher, left, is accompanied by British Prime Minister Gordon Brown as she leaves 10 Downing Street, in London, after unveiling a portrait of herself in the Prime Minister's official residence, Monday, Nov. 23, 2009. (AP Photo/Sang Tan)

AP2009

FILE - In this Saturday, March 8, 2008 file photo, former British Prime Minister, Margaret Thatcher, in London. Former Prime Minister Margaret Thatcher is ill with the flu and will skip a reception at Number 10 Downing Street to honor her 85th birthday. Prime Minister David Cameron's office has announced that Thatcher wants the reception to go ahead as planned despite her illness. The reception for former ministers, friends and colleagues will be the evening of Thursday, Oct. 14, 2010. (AP Photo/Sang Tan/file)

AP2008

Former British Prime Minister Baroness Thatcher, left, with the current Prime Minister Tony Blair in discussion prior to meeting veterans of the Falkland Islands conflict as they take part in a 25th anniversary march for veterans in London, Sunday June 17, 2007. Twenty-five years ago in June 1982 the Falkland Islands, a small group of islands off the South American coast in the south Atlantic, were liberated from an Argentine occupation, some 255 British servicemen and civilians died along with over 600 Argentineans . (AP Photo/Alastair Grant, Pool)